Improvement in hoisting device



C. GOODSELL.

, HOISTING DEYIGE.

Patented June 25, 186?.

Tu: Nonms PETERS co, PHoTaLITHoA. wAsHmcrON. D, c,

I @einen tatrs latmt @Hita SAMUEL' C. CCCDSELL, CF NEW HAVEN, CONNECTICUT.

Lettere Patent No. 66,079, dated June 25,l 1867.

` IMPROYEMENT IN HOISTING DEVICE.

Be it known that I, SAMUEL C. GOODSELL, of New Haven, inthe county of New Haven,andState of Connecticut, have invented certain new and uscfulimprovemcnts in Hoist-ing Apparatus; and I hereby declare the i following to be a full, clear, andY exact description ofthe same, reference being had. to the accompanying drawings, in which-- Figure 1 is a side elevationV of my improved apparatus, and y Figure 2`an end elevation 'of the saine looking toward the larger winding-cylinderB.

Figures 3- and 4 are planfviews, showing the mechanism for throwing the truck-wheels in gear with,` the driving mechanism in two positions; and

Figure 5 is a section of the apparatus on the line-gz: z, iig. 3.

` My principal object in the invention, the subject of this application, isto' produce a hoisting machine or apparatus lin which the power may be greatly increased without complicating the machine, and, further, toso arrange themechanism as toiit the machine for use either as a stationary hoister or as a movable apparatus by which the same resultmay be eii'ected as by the use of the ordinary freight-crane with a srving'mg or traversing arm. 4

The principle upon which my invention is based is that which in mechanics is illustrated by tho diii'erential wheel and axle.A .I take two drums, whether conical or cylindrical in shape, and mount them 'sidel by side in'a'suitable frame. These drums may be either of different diameters unitedby lgears of equal diameters, or of equal diameters connected by gears of unequal diameters, or both cylinders and gears maybe of unequal diameters. The gears are mounted on their respective drums, onemeshing with the-other; and as'under this arrangement lthe drums rvhenjput in motion will revolve in opposite directions, the hoistingrope or chain by which the Weight is held in suspension will roll oii one drum while it is Wound upon the other, As thegears and cylinders revolve in opposite directions, and as the rope is suspended from the same' side of each cylinder, the wcightwilll be brought upon the gearsat their point of contact, pressing them together in such manner that when the cylinders and their gears cease to revolve the weight willA be held suspended in any position,"(exeept when the dierence between the diameters of the drums is suilicient t-o overcome the friction of the working parts.)A Gonical drums instead of cylinders may be employed, their bases being mounted in opposite sides of the frame, and

.by this means the leverage may easily be increased to any extent desired.

In 4order to admit oi' the movement of the apparatus from 'one point to another, carrying at the same time Y the weight in suspension, I mount the cylinders or drums on truck-wheels which run on a. tram-way elevated to any desired height, and of such'length and proportions as are required. by the position and size of the wheels,

`and the distance or space 'tobe traversed. These wheels are arranged so as to he thrown in and out of gear ,with the winding-cylinders, and thus either to remain stationary or to receive motion from the-same power which rotates" the drums. .By this combinationof parts the truck-wheels may be rotated and` the apparatus moved in either direction' simultaneously with the revolution of the winding-cylinders, (the latter serving not only to hoist or lower the weight, but to impart motion to the wheels,) or the wheels and apparatus may remain stationary or be moved independently of the cylinders, as occasion requires.

To enable others skilled in the artto understand and use my invention, I will now proceed to describe the manner in-)v'hieh the same is for may be carriedinto effect by reference to the accompanying drawings.

As there represented, the drums upon which the rope 'iswound consist of two cylinders'A B of unequal diameters, supported side by side and parallel with eachother, in suitable bearings formed Vin the sides of the machine, and geared together by means of 4two toothed wheels C D of equal diameters, mounted respectively 'upon the cylinders A B. The cylindersare revolved by means of a crank or a chain-wheel, E, on the shaft of the cylinder A, or, if more power be required, by means of' an auxiliary wheel, E', carrying a pinion, F, which meshesJvith atoothed wheel, G, on theV shaft of cylinder A. The rope H from which the weight issuspended is attached to the cylinders, one of its ends being secured at or near oneofl the ends of the small cylinder. After. winding the rope around this cylinder until it isi'ull, the other end is attached tothe opposite end of the largerv cylinder, leaving a length of rope hanging between the cylinders equal to double the hoist or double the distance of the cylinders from the ground, and halfof the circumference of the-movable pulleyA K around which the rope is passed before it is-secured to the larger cylinder. i The rope hangs Vfrom the same side of each cylinder, as, for instance, from the side a of theicylinder A, and the corresponding side b of the cylinder B, so that as the cylinders by being geared together, as above described, are caused to revolve in, opposite directions, when the rope is rolled ofi' the smaller cylinder it will be wound upon the larger one, the Aweight in each revolution being raised a distanceequal to half the difference between thecircumferences of the two cylinders. By 'reversing the movement of the cylinder, the weight will, of course, be lowered in acorresponding degree.' As Y the rope hangs Afrom the corresponding sides a b of each cylinder, the tendency of the weight when the apparatus is not in motion is to draw' the cylinders in the same directions, i. el, to cause the cylinder A to revolve toward the side a, and the cylinder B toward the side b. Pressure will therefore be induced at the point of contact of the gears C D, and theyiwill be firmly locked so as to hold the weight suspended.

The mechanisms thus far described, consisting of the diierential cylinders, gears, rope and pulley, and crank or wheel, and frame in and by which thesame are supported, constitute in' themselves a perfect hoisting apparatus, which, where only a stationary apparatus is required, possess all the requisite qualiications` or properties for such a machine. But when the'` apparatus is required not only to lift weights, but to move or transport them from one point to another, thenV additional mechanism is needed. In order to indue the apparatus with'thlis property I mount it upon truck-wheels, which rest upon an elevated tram-way, W, or other suitable ways for holding and guiding the wheels which can bc traversed by the apparatus. The shafts of one or both ofv the cylinders have their bearings in the hubs lof the truck-wheels L L M', which in ltheir turn have4 their bearings in the main frame of 'the apparatus. The shaft of the cylinder A projects through the wheels L L on each side, and carries on one end the driving-wheel E, on tho'other the toothed wheel G. Both of these wheels, while they revolve with. the shaft, are capable of sliding longitudinally upon it, and they carry on their inner faces clutches cc', which are intended to engage with the clutches cl d formed on the exterior faces and around the hubs of the wheels L L. The pinion F of the wheel E', it may be here remarked, is 'of such length as to allow theowheel G to slide in the manner above described without being thrown out of gear with the same. By sliding the wheels E and G toward or away from the truck-wheels, the clutches c c d d are thrown in gear, so as to cause the truck-wheels to revolve in unison with the cylinders, or are disconnected so as to admit of the truck-wheels and consequently the whole apparatus being stationarywhile thc rope is wound upon the cylinders. i

The mechanism I employ for operating the clutches c c, consists of a vibrating arm or lever,f, pivoted at m to the main frame V, and carrying p, two lateral arms gg", one pivoted to the end of the lever beyond the pivotal pointm, the other secured inlike manner to the lever on the opposite side of the joint m The arm g is fastened to thesliding-wheel E and its clutch c, and the corresponding arm'g' on theother side is fastened to .the toothed wheel Gr and its clutch e.' Consequently when the leverf is in the position shown iii-iig. 3, the wheel E willbe drawn by the arm or lever g toward the truck-wheel L, so as to cause the clutches c d to engage with each other, and the arm g will actuate its wheel G in'likc manner, causing the clutches c d to be thrown into gear. Now, ify the lever fbe vibrated or moved in the Aopposite direction, so as to occupy the position shown in fig. 4, the wheels E arid G will be moved away from the truck-wheels L L', and the clutches c d cV d will be thrown out of gear. When the apparatus is eleva-ted upon the way W to a considerable height, the leverf may be operated by means of ropes 1' passing over pulleys or friction-rollersp in oppositeside of the frame, as shown in iig. 2.

After the foregoing description, the method of operating the apparatus will be readily understood with but little further explanation. Y

The weight' is raised and lowered by turning the wheel E, or, if greater power be required, the wheel E in the proper direction. The upward or downward motionof the weight is, of course, differential, depending upon the difference between Vthe diameters of the two cylinders on their gear. If at any time during thelifting 'or lowering of -the weight the cylinders cease to revolve, the weight is maintained stationary and in suspension by rea-son of the arrangement of the cylinders and hoisting rope, as above explained, which throws the pressure of the weight upon the gears at their point of contact, and thus electually locks them. During the revolution of the cylinders, if it is desired to move the apparatus to a diil'erent location', the leverf, which we will suppose l tohave been in the position shown in tig. 4, is moved to the position shown lin iig. 3, so as to throw the clutches c de ii in gear. A When this is done, the motion of the cylinder-shaft A is imparted to the truck-wheels L L', which-begin to revolve, (the wheels M M following their movement,) and more the apparatus along the way W at vthe same time-that the hoisting or lowering ot' the weight is continued. When the apparatus has traversedA the tram-way the desired distance, the clutches are unlocked by moving the leverf in the other direction, and the truck-wheels being now disconnectedfrom thecyli-nder cease to move, stopping the motion ofthe apparatus without trouble. Y v 'i I i It will be, of course, understood that power m-ay be applied in various way to actunte the winding-cylinders, und by various means, whether by the employment of chain-wheels, cranks, or gearing. The proportion which the cylinders bear to cach other, with respect to size and dimensions, may, of course vary, to increase or lessen the dierential motion, and, as above said, they can be either conical .or cylindrical in form. The gearing F G may also be' combined with additional gear, so as to increase to any desired extent th'e power hy which the cylinders are revolved. v

Having' described my'invcntion, and the manner in which the same isor may he carried into effect, l shall now state my claim as follows: .l

1. A hoisting apparatus inwhich the cylindrical or conical winding-drums, whether of thc sume or of unequal diameters, arel combined with the hoisting rope and pulley and gears under lthe arrangement set forth,- so that the weight shall be raised or lowered with a differential motion.

2. The combination of the conical or cylindrical winding-drums and their gears, of the hoisting rope attached to said drums nnder the arrangement herein described, so that when the drums are not caused tofrotate by theii! operative mechanism the weight suspended'from the said rope shall cause the locking -of the gears as set forth.

l 3. The combination; in an apparatus such as described, of the winding-drums or cylinders and their gears, with 'the mechanism for rotating the same arranged and operating as herein shown and specified.

411 claim the combination, in an apparatus, nsdcscribegl, of the winding-cylinders,'and-mechanism for revolving the same, with the truck-wheels upon which the said apparatus is mounted, under such anrarrangement that by the movement of the cylinders the said wheels may be rotated-and the apparatus moved in eithe'r direction, as set forth.

5. The combination, witlrthe truckwhe'els, winding-cylinders, and mechanism for revolving the Same, of the clutches for throwing said wheels in and out of gear with sad'cylinders and driving mechanism, substan tially as shown and specified. Y i

In testimony Whereol` I have signed my name to this specification in thelpresene ol' two sfnbseribing Witnesses.

l SAMUEL G.;G0 ODSELL.

Y Witnesses:

SxMEoN BALDWIN, JonNsoN T. PLAN. 

